These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.
SOURCE: Blinking power and OPC lights
If you have tried to reset the TV by unplugging it for 2 minutes and still have the same issue then it is time to bring the set to a repair shop.
SOURCE: sharp lc-46d64u blinking codes. power blinks 3
Very common in Sharp,tries unplug,replug back in,tries again off/on couple times,still happen blinks than ur main video board it dead.
SOURCE: Sharp lc52d64u power light blinks once, then power
Ur Main Tuner signal board is dead.Replaced that board will fix the problems.Tries Shojimmy.com,Ebay.com to buy a refurbish Tuner board.
SOURCE: My Sharp LC-42-D62U won't power up. The power
Ur Tuner signal board have problems or dead.Ur power LED light indicator stable for a few mins before the power LED light,and the OPC LED light indicators flashes?After the POWER light and OPC light indicators flashes,just push the power button again for the power recycles again.Probally have to pushes the power button 3 or 4 for power light and opc light indicators flashes,the LCD backlght will lght up and work.Sharp tv have this problems alot,very common in Sharp LCD tvs.
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